# Chapter 4 - Energy and Chemical Reactions - Conceptual Exercise 4.3 - Direction of Energy Transfer - Page 157: a

36 kJ of heat transfer occurred

#### Work Step by Step

Energy required to raise temperature by $1^{o} C = 1.5 kJ$ Heat transfer when temperature is decreased from $25^{o} C$ to $1^{o} C$ $= (25 - 1) x 1.5 kJ$ = 36 kJ

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